Scale



Jan. 8, 1935.

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J. S. OGSBURY SCALE Filed May 6, 1933 5 Sheets-Sheet l A'TroRNEY Jan. 8,1935.

J. s. oGsBURY SCALE Filed May 6, 193.3 5 Sheets-Sheet 2 INVENTORATTORNEY Jan. 8, 1935'. J. s. oGsBURY SCALE Filed May 6, 1933 5Sheets-Sheet 3 INVENToR TroRNEY O mv wm ..\\$h1 .Qv/ 1MM o emmwmwmHHHHHHHHMHHHHHHHHHHM@ mm. vw N Jan. 8, 1935. .1. s. oGs-BURY SCALEFiled May 6, 1933 5 Sheets-Sheet 4 @aan INVENTOR usal Mu w u n urn ld mLLILLL; T LLLLLLL LLLLLLLLLLL L L. L. T n u n W n 1 Y r L n U u u u U un /Mis d wsos. b mew 4 2 w WAI BY ATTORNEY Jan. 8, 1935. J. s; oGsBuRYSCALE Filed May 6, 1933 5 SheetS-Sheet 5 FIG. 8.

' INVENTOR ATTORNEY Patented Jan. 8, 1935 UNITED STATES PATENT OFFICEmesne assignments, to International Business Machines Corporation, NewYork, N. Y., a corporation of New York Application May 6, 1933, SerialNo. 669,631

Claims.

. This case relates to weighing and computing scales of the drum type,for use on counters of retail vending stores and is directed to animprovement on the construction shown in appli- 5 cation Serial No.617,091, filed August 14, 1932. 1n drum scales, the weight of an articleplaced on the platform rotates a cylinder or drum chart having aplurality of parallel circumferential columns of price indications, eachcolumn based on a different price per pound or rate. To provide thecustomer as well as the merchant with an indication of the price of theweighed article, the price columns adapted to be viewed in uprightposition by the merchant may extend only half- -way around the chart andthe other half of the chart may have marked thereon duplicate pricecolumns with their figures adapted to be viewed in upright position fromthe customers side of the scale oppositerthe merchant.

While each set of price columns extends only half-way around the chart,it is desired that the full circumference and weight range of the chartbe utilized. Thus, the chart may be used for weighing, for example, upto thirty pounds while 25 computing only to fifteen pounds. f

To prevent the merchant and customer from reading each others sets ofprice indications, a

chart masking and concealing shutter mechanism disclosed and claimed inaforementioned applica- 30 tion, has been manually operated by themerchant after the chart has moved through half its weight range orthrough its total price range.

The object of the present invention is to take control of the shuttermechanism away from the merchant and to make it operate automaticallywhen the chart has passed its price range and is beginning its secondhalf of the weight range.

An object of the present invention is also to provide such automaticcontrol means oi the shutter as will not interfere with the proper andaccurate operation of the scale. p

Further and other objects and advantages will be hereinafter set forthin the accompanying specification and claims, and shown in the drawings,which by way of illustration show what is now considered to be thepreferred embodiment of the invention.

In the drawings:

Fig. 1 is a side view of the scale with the upper part in section,

Fig. 2 is an elevation of the upper part of the scale from the merchantsside with some of the parts broken away and in section to show theinterior,

Fig. 3 is a top view of the scale with the outer cover in section,

Fig. 4 is an enlarged, detail view of the shutter actuating connections,

Fig. 5 is a fragmentary view of the customers 5 side of the scale chartand casing with the shutter in open or inactive position,

Fig. 6 is a view similar to Fig. 5 with the shutter in closing or chartmasking position,

Fig. 7 is a development of the chart,

Fig. 8 is a detail of the circuit closer of the shutter operatingmechanism, and,

Fig. 9 is a skeleton view of the scale combined with a different form ofcircuit closer.

'I'he scale comprises a goods platform 10 sup- `15 ported by base leverl1 which through vertical connection 12 operates horizontal draft device13. Connected to opposite ends of device 13 are springs 14 suspendedfrom end frames l5 and racks 16 for rotating chart 17. The chart isencased by upperand lower casing halves 18 and 19 capped by illuminatinghead 20 which carries lamps 21 for illuminating the chart when anrarticle is placed on the platform. Lower casing half 19 has integralpressed-out portions 22 at opposite sides for mounting cylinder lenses23 which magnify the chart indications. The indications are indexed byzero lines 24 and the chart columns are correlated with rates 25 onprice faces 26 secured at opposite ends to end frames (see Fig. 2). Forfurther understanding of the weighing mechanism of above construction,reference may be had to Patent No. 1,690,258. y f

Referring to the development of the chart, Fig. 7, it is seen that thescale has a total weight capacity range of twenty-four pounds, and atotal price range of only twelve pounds. One-half of chart 17 is coveredwith a set of merchants computation values and the oppositecircumferential half is coveredwith a duplicate set of customers values.Identical values are about 180 apart and the index lines 24 of themerchant and customer are similarly displaced. To provide weightreadings throughout the full range of the chart, the latter has a singlecustomers column 28 of weight indications and a single Weight column 29for the merchant.

After the chart passes its twelve pound point, the merchants set ofvalue indications would appear in inverted position to the customer andthe customers set of `value indications would appear to the merchant ininverted position. To prevent confusion and error, a shutter mechanismautomatically comes into action when the scale goes beyond the twelvepound mark to conceal both VVVISO 'ffii -nearest the merchant;

sets of value indications at opposite sides of the scale.

The weight indications, however, remain exposed and the scale may thenbe used to weigh articles up to twenty-four pounds although their pricevalues will not be indicated.

The :sh-utter #mechanism acomprises' ycurved sheet :metal plates 30 .and31 respectively .on the merchants and customers sides of the scale andsecured at their upper ends to elongated barse32 projecting lengthwiseof the chart from curved, circumferentially extending movablesupport-ing brackets 33, one at eachend-,otthe scale. The brackets 33have circumferential slotsf-34-receiving guiding pins 35 and 35,'thelattenbeingtcentrally located between pins 35. The pins 35 and 36are secured at their 1ower=ends tofamentrally disposed curved bracket 37fastened to the upper drum casing half 18 which is lxed'ialoy-screws` 38to the Aend frames 1,5. Movablebrackets 33 `are spaced `apart*frombracket l137 byfanti-riction elements 39 retained in bracket''? and bywashers '40 -on pins 35 and'fi. frictionally hold the brackets 33l inposition, 'the'pinsjlhave spring pressed washers 40' bearing on'the topof v`-thebrackets''33 andpin lhasgaspring 41 pressof the'left'handfpulleyflZ Kwhichdirectsthe cable towarclsthe end of theVleft:handfloracket'nearest the customer `to whichjt'is secured.l Totheend "0f vrthe left handbracket jnearest the-merchant WiS secured .a'cable 147 vwhich 'bends around the flower -groove in jleft hand pulley42, extends 'lengthwise of 4the Vchart r'into the upper groove in righthand pulley 424'and then downwardly to be -secured to :the end of theright v`handbrac'ket 33 Solenoid 44is carried by a 'U'shape'd '.'bracketl48 mounted by angle bracket 49tolthetoplof the -upper `:casing half 18."The armature 45 is normally urged outwardly and ,towards the` left, aslviewedin rligsf2 and 3 vby a coil spring 50. When solenoid coil 44^is""energized it attracts its `.armature to the right,afgainst'resistance, of spring A50, pulling cable 43 to.. theArightwvhich 'thereby actuates 'the jleft hand bracket 33 circumferen--tia'l'ly towards the merchants side of Y, the 'scale and positionsthemerchantsshutter BOZsecured vto the glatter; bracketV in Vpositionfor concealing the Achart Fat :fthe gmerchantsi;sigle, as shown 'bydot-ted linesin f4. 'This' movement lof the left hand bracket 33 pullsdownwardly-r on :cable 4'7l causing the'intermediate part .thereofv tomove to the left and thereby `pulling upon the vright lhandbracket 33 tomovethe shutter A31 connected to the latter 'bracket downwardly towardsthe customersside of the scale into chart concealing position indicatedin dotted lines in Fig. 4. To return the ,shutters to chart exposingpositions, indicated in lfull lines in Fig". 4, the solenoid coil 44isdeenerg-ized and spring l50 lexpands and reverses the movement-s, justdescribed, of the shutter parts. v

The solenoid is not energized .during the movementof thechart .throughits price range but is .energized as soonas theechart :passesf'beyondits ,11:53 until the scale passes its twelve pound point. `As soon asthis point is passed, terminals 52 and HV53 are serially connected byspring 55 and remain r`connected.,'eluringfthesecond half of the weightz range fof 'the scale.

".WhentermhialsBZ and 53 are thus connected 15 thecircuit?through-'solenoid 44 is closed and the shutters ,30 .andIii-accordingly moved into chart price range into the twelve totwenty-four pound weight field. To control the energization of thesolenoid, the circuit closer shown in Figs. 1 and 3 may be used. Thiscircuit closer comprises a pair of terminals 52 and 53 secured to aninsulator 5 block 54 in turn secured to an end casting 15. Rigidlyl#movable :with ,a rack :1:6 and insulated therefrom '.ris. averyflexible, light latspring 55 which does not contact both terminals 52and concealing positions.

Briefly summarizing the operation of the above parts, a load placed 4onplatform 10 rocks base 20 lever {1'1 to move-rod 12'A and draft' device213: down- -wardly against resistance-of springs i1'4 connectedJto'device 13. Racks 1'6"also connected to device 13 rotate chart -17to'disclose through lthecustomers and merchants sight windows all theduplicateprice'and weight indications. If theja'rtiole weighsmore thantwelve' pounds, metall spring `i5-bridges :terminals 52 and53 closingthe cir- `cuit through solenoid 44 lwhich operates cables 43 and '4,7to'move'the-'shutters 30V andv 31 from "so fullto `dotted line positions(Fig. 4) Ain which they malsklthe price-partv of the Vchart at both thecfustomers-and mechants sides, leaving the weight columns 28 and`29-exposed` `Theshutter remains Y closed forallweights fro'mtwelveftotwenty-four ,pounds `Whentheload is rrelieved'from the platlform, thespring r55 disengages terminals Iv52 Eand 53 "and opens the *solenoidcircuit "permitting `spring 50l to restore the shutterparts to fullflineand open pos'itiongl n Y 40 mbodiment of 'the scale com- "bined 'with adiierent form of circuit closer. In

contact for engaging a :stationary contact 66 `to close 'the Ysolenoidcircuit. 'The lever' 63 is confnected toa resistant spring 67 ywhichhold'svcon'- ytactsl 65 and `fcdisengaged 4until the scale passes:beyondits twelve pound orprice range;

Whenthe fcon-tacts engage, they close the 1cirv`cuit through thesolenoid, moving lthe shutters :ton chartruconoealing positions. Theleft vend of i .lever 63 comes to v.restagainst fixed Iblock v.68

topreventseparation yof contacts 65 an'd -66 during Ythe second half ofthe weight .rangehof the scale. e The action of the Y,contactcloserconsisting o1" steelyard 672, lever63, contacts65, 66 and spring V6'?does not have theY slightest reactive leilect on' the main scale whichoperatesrthe r'drum chart and does not aiect in any` degree the accuracyof the weighing operations norl of the price and weight indicationsfThis may be understood from the lfact that the proportion :of the totalpull `4from draft rod 12 which is ytransmitted through vlever 60 NtotheV s'teelyard 61 Vof the main scale remains thevv same regardless ofthe operation or position of -lever 60 or yofthe parts connected to theleft hand end thereof, being dependent solely on the length of lever 60between its points of connection to rod 12' and steelyard 61.

While there has been shown and described and pointed out the fundamentalnovel features of the invention as applied to the several modications,it will be understood that various omissions and substitutions andchanges in the form and details of the devices illustrated and in theiroperation may be made by those skilled in the art without departing fromthe spirit of the invention. I, therefore, intend to be limited only asindicated by the scope of the following claims.

What is claimed is:

1. In a scale, a load support, counterbalancing and indicating meansoperated by the support upon imposition of a load thereon, theindicating means comprising a rotatable drum chart with a column ofweight indications extending throughout substantially the full range ofmovement of the chart and columns of computations based on differentunit factors extending around the chart for less than its full range ofmovement, an enclosure for the chart including a sight Window throughwhich the weight indications and computations are simultaneously exposedto view throughout the computation range of the chart, obscuring meansfor rendering the view of the computations through the sight windowineffective after the chart passes the computation range, While theweight indications remain visible through said window, a control for theobscuring means, and connections between the load support and thecontrol for automatically operating the latter upon the chart passingbeyond the computation range.

2. In a. scale, a load support, counterbalancng and indicating meansoperated by the support upon imposition of a load thereon, theindicating means comprising a rotatable drum chart with duplicatecolumns of weight indications arranged to be read from opposite sides ofthe scale throughout the full weight range of the scale, the charthaving duplicate sets of columns of computations, each set ofcomputations extending about half-way around the chart, the sets beingon opposite halves of the chart and arranged to be read from oppositesides of the scale, a casing for the chart with sight windows atopposite sides through each of which one of the weight columns and oneof the sets of indications may be viewed, and obscuring meansautomatically operated under control of the load support for obscuringthe reading of both the sets of computations at the opposite sightwindows when the chart passes beyond the computation range.

3. In a scale, a load support, counterbalancing and indicating meansoperated by the load support upon imposition of a load thereon, theindicating means comprising a. drum chart opposite halves of which bearduplicate computations arranged to be viewed from opposite sides of thescale, an enclosure for the chart having sight windows at opposite sidesof the scale to which the duplicate computations are simultaneouslypresented for view therethrough, shutters at opposite sides of thescale, and means controlled by the load support for automatically movingthe shutters into positions at the sight windows for obscuring the chartcomputations after the chart has made substantially one-half arevolution and has passed beyond the computation range.

4. In a scale, a load support, counterbalancing and indicating meansoperated by the support upon imposition of a load thereon, theindicating means comprising a rotatable drum chart having duplicateWeight columns extending the full range of the chart and duplicate setsof computation columns, each set extending through about half the fullrange of the chart, a casing having sight windows at opposite sidesthrough each of which one of the Weight indicating columns and one ofthe sets of computations may be viewed in upright position, shutters,one at each side of the chart, supporting means for the shuttersstationary relative to the casing, electrical means for operating theshutters relative to the supporting means into positions at theircorresponding sight windows for obscuring only the computations andleaving the weight columns exposed and a control for said electricalmeans operated by the load support when the scale passes beyond thecomputation range of the chart to cause the shutters to move into saidobscuring positions to thereby prevent inverted computations appearingat the sight windows.

5. In a scale, a load support, load counterbalancing and indicatingmeans, means coacting with the indicating means for determining itsvisibility, an auxiliary load resistant mechanism for controlling thevisibility determining means, a factor lever having a connection to saidfirst mentioned means, an operating connection from the load support tothe factor lever, and a connection from the factor lever to theauxiliary mechanism for actuating the latter and the visibilitydetermining means independently of and without reactive interferencewith operation of the first named load counterbalancing and indicatingmeans.

JAMES S. OGSBURY.

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